Characteristics of the Load Transmission in Differential Gear Device (Differences between One Pinion Type and Two Pinion Types)

Differential gear machine is often used for a car to smooth cornering. For the complexity that four bevel gears in a differential gear device engage at the same time, there are few papers that gathered up an analytic study about load distribution and tooth root stress distribution on bevel gears. In the case that three bevel gears in differential gear device engage at the same time, authors analyzed load distribution and tooth root stress in previous report. Therefore, in this study, authors analyzed load distribution and tooth root stress in the case that four bevel gears in differential gear device engage at the same time. Load distribution and tooth root stress in the case that four bevel gears engage at the same time were compared with them in the case that three bevel gears engage at the same time. In addition, how assembly errors and crowning influence on load distribution and tooth root stress in differential gear device were clarified quantitatively.